北戴河湿地沉积物中人工合成麝香分布特征与环境风险评估  

Distribution and environmental risk assessment of Synthetic musks in sediments from Beidai River wetland

作　　者：董小锋 楼迎华 刘晓文 郑明刚[2] 石磊 张宇 王玲 范士亮[2] DONG Xiaofeng;LOU Yinghua;LIU Xiaowen;ZHENG Minggang;SHI Lei;ZHANG Yu;WANG Ling;FAN Shiliang(College of Environmental Science and Engineering,Qiingdao University,Qiingdao,266071,China;The First Institute of Oceanography,SOA,Qiingdao,266101,China)

机构地区：[1]青岛大学环境科学与工程学院,青岛26607 [2]国家海洋局第一海洋研究所,青岛266101

出　　处：《环境化学》2019年第3期662-668,共7页Environmental Chemistry

基　　金：国家重点研发项目(20177YFC1404504);国家公共研究机构基础科学基金(2016Q07);海洋公益项目(201505028);国家自然科学基金(21307063)资助~~

摘　　要：本文采用索氏提取萃取土壤中人工合成麝香并结合气相色谱-质谱联用仪(GC-MS)检测,对北戴河湿地23个表层沉积物中4种人工合成麝香(佳乐麝香(HHCB)、吐纳麝香(AHTN)、酮麝香(MK)、二甲苯麝香(MX))污染水平及分布特征进行了研究,并进行相关环境风险评价.在沉积物样品中检测出19.50—34.93 ng·g^(-1)(平均含量:28.46 ng·g^(-1),dw)佳乐麝香(HHCB)以及16.37—29.29 ng·g^(-1)(23.30 ng·g^(-1),dw)吐纳麝香(AHTN);只有5个样品检出酮麝香(MK),浓度范围从低于检测限(LOD)—37.89 ng·g^(-1);在所有样品中均未检测出二甲苯麝香(MX).结果显示,沉积物中人工合成麝香污染的主要成分为HHCB和AHTN,其含量占人工合成麝香总量50.65%—100.00%.对23个沉积物样品中的3种人工合成麝香进行Kolmogorov-Smirnov(K-S)检验,结果发现,HHCB与AHTN的含量存在显著的相关性(<0.01),说明该地区检出的HHCB与AHTN可能具有相似来源和归趋.北戴河湿地沉积物中AHTN和HHCB蓄积量估算为:510.270 g和623.274 g.环境风险评估显示,实际检出浓度低于沉积物中HHCB与AHTN的预测无效应浓度,理论上不具有急性风险.Four synthetic musks(galaxolide,tonalide,musk xylene and musk ketone) in 23 surface sediments of Beidai River wetland were determined by Soxhlet extraction coupled with gas chromatography-mass spectrometry(GC-MS) analysis.Distribution and environmental risk assessment were conducted as well.The concentration of synthetic musks were in the range of 19.50-34.93 ng·g^-1 for galaxolide(average content:28.46 ng·g^-1,dw) and 16.37-29.29 ng·g^-1 for tonalide(average content:23.30 ng·g^-1,dw).Musk ketone was detected only in 5 samples,with a concentration rang from below the detection limit(LOD) to 37.89 ng·g^-1.Musk xylene was not detected in all samples(MX).The results showed that galaxolide and tonalide were the main musk contaminants in sediment,which accounted for 50.65%-100.00% of synthetic musk.Kolmogorov-Smirnov(K-S) inspection of 3 synthetic musks from 23 sediment samples were analyzed.It was found that the concentrations of HHCB and AHTN were statistically significant(<0.01),which indicated there were similar sources and fate between HHCB and AHTN.The estimation of AHTN and HHCB accumulations in the sediments of Beidaihe wetland were 510.270 g and 623.274 g,respectively.The environmental risk assessment showed that the actual detection concentration was lower than the predicted ineffective concentration of HHCB and AHTN in sediments,and there was no acute risk in theory.

关 键 词：人工合成麝香 沉积物 北戴河湿地 环境风险 

分 类 号：X52[环境科学与工程—环境工程] X820.4